Age is the x values and height is the y values. In order to be a function, there can be no repeating x values...they all have to be different. You can have repeating y values, just not the x ones. So look at all the x columns (ages) and u will notice that the only one that does not have any repeating x values is Hal's results....no x's are the same and it is therefore, a function.
Answer:
x = -5
Step-by-step explanation:
Divide each term by 4 and simplify.

Move all terms not containing X to the right side of the equation.

Divide each term by 3 and simplify.

Answer:
account would be empty in 2 months
Step-by-step explanation:
Jackson’s puppy would gain 80 pounds in 40 weeks